gw8 - Dense stellar environments as sites of gravitational wave emission |
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Speaker |
Amaro Seoane, Pau |
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| Talk Title |
Relativistic mergers of black hole binaries have (1) large, similar masses, (2) low spins and (3) are circular |
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Abstract |
Binaries of stellar-mass black holes are among the most interesting sources for ground-based detectors, and have constituted the first detections. In this talk I will show that there is a selection effect for ground-based detectors, which should predominantly observe binaries of black holes with (1) large, similar masses, (2) low spins and (3) low eccentricities. "Hyperstellar" black holes (HSBs) (i.e. black holes with masses larger than the nominal 10M? are predicted to be principally observed with an associated low value for the spin, typically of a<0.5, regardless of the formation channel. Also, when two HSBs build a binary, each of the spin magnitudes is also low, and the detection is mostly of binary members with similar masses. To address the distribution of the eccentricities of HSB binaries in dense stellar systems, I have used a large suite of dedicated three-body scattering experiments that include binary-single interactions and long-lived hierarchical systems with a highly accurate integrator, including relativistic corrections up to O(1/c^5). The results show that most sources in the detector band mainly have nearly zero eccentricities. |
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